Answer:
Set up audit trail
Explanation:
The administrator should set up an audit trail in order to get this information.
An audit trail would give him the record of all the configuration changes that have been made in a file or a database in the last 6 months.
Audit trails can be manual or electronic. It provides history and also documentation support. It can authenticate security and also help to mitigate challenges.
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Peripheral Bus is not associated with the SATA function on a computer as they are not universal to each other. If you can go more into context, that would be great.
Answer:
Confirmation numbers are given out so that if there is ever a problem with your purchase, they can pull up the transaction on their end. It's simply an identifier for the transaction. If they ever need to validate that it is truly <em>your</em> purchase, they will ask for the confirmation number. You don't need to do anything, just pull up the ticket when you get to the theatre and let them scan it off your phone. You should be able to add it to your Apple Wallet if you use that (makes it easy).
802.11b uses 2.4 GHz frequency band